/*
 * Sonatype Nexus (TM) Open Source Version
 * Copyright (c) 2008-present Sonatype, Inc.
 * All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions.
 *
 * This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0,
 * which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks
 * of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the
 * Eclipse Foundation. All other trademarks are the property of their respective owners.
 */
package org.sonatype.nexus.capability;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.sonatype.nexus.common.db.DatabaseCheck;

import static com.google.common.base.Preconditions.checkNotNull;

@Named
@Singleton
public class DefaultCapabilityDescriptorProvider
{
  private final Map<String, CapabilityDescriptor> descriptors;

  private final DatabaseCheck databaseCheck;

  @Inject
  public DefaultCapabilityDescriptorProvider(final Map<String, CapabilityDescriptor> descriptors,
                                             final DatabaseCheck databaseCheck) {
    this.descriptors = checkNotNull(descriptors);
    this.databaseCheck = checkNotNull(databaseCheck);
  }

  public List<CapabilityDescriptor> get() {
    return descriptors.values().stream()
        .filter(capabilityDescriptor -> databaseCheck.isAllowedByVersion(capabilityDescriptor.getClass()))
        .collect(Collectors.toList());
  }
}
